Share of Business Customers Is Down to About 5%

BlackBerry Ltd.'s last-ditch move to abandon its consumer business and focus on selling devices to companies is a risky bet that it can hang on to ground that is rapidly eroding.

Just three years ago, BlackBerry had a market share of nearly 70% among business customers in North America, according to the research firm IDC. This year, that figure has dropped to around 5%, IDC says. Globally, BlackBerry's business market share has...